摘要
采用西门子S7-300 PLC实现空压机组的自动监控和保护。PLC利用基于Modbus通信协议的RS-485总线采集空压机组的运行信息,控制多台空压机轮换运行。系统配置触摸屏和PC机分别进行现场和远程监控。
Adoption of Siemens S7-300 PLC to realize auto- monitoring and protection for air-compressor group. PLC makes use of RS-485 bus, based on Modbus protocol, to collect air-compressor group＇s operating information and controls their alternate working; Touch screen and upper computer are used as field monitoring station and remote monitoring station respectively.
